MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 05c081f975c82f8a51774b2a4a0472bb3a212abace29ce28b78b85c69eb915a6. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.

Database Entry

Formbook

Vendor detections: 14

Maldoc score: 4

Intelligence 14 IOCs YARA 15 File information Comments

SHA256 hash:	05c081f975c82f8a51774b2a4a0472bb3a212abace29ce28b78b85c69eb915a6
SHA3-384 hash:	86735ebe1a41b8841c223ba44ccb30cc73f04cb1d515c69f528bc4b4a7941d167c1a5fd90dc8493883e8b9adf5931471
SHA1 hash:	1c4318975eabb24dca3fcea15898d78b8413df32
MD5 hash:	34f51a5d469aac18095bc281a2fb1a2b
humanhash:	orange-saturn-mike-venus
File name:	PO-288424.xls
Download:	download sample
Signature	Formbook Create hunting rule
File size:	372'224 bytes
First seen:	2024-01-12 12:53:29 UTC
Last seen:	2024-01-16 12:07:02 UTC
File type:	xls
MIME type:	application/vnd.ms-excel
ssdeep	6144:A0cBC6QREcis2JS5JA8g1gG30q4SXR1VE+UXx2IQQvaO2EYcWi4:ArBC6uEHsu8JA84g0d1cxb3nWi
TLSH	T1B9841224BA19D27BD51743714DDC408B1A2DFC22FF98955B3036BB896C3EF68A92124E
TrID	46.5% (.XLS) Microsoft Excel sheet (alternate) (56500/1/4) 26.7% (.XLS) Microsoft Excel sheet (32500/1/3) 20.1% (.XLS) Microsoft Excel sheet (alternate) (24500/1/2) 6.5% (.) Generic OLE2 / Multistream Compound (8000/1)
Reporter	abuse_ch
Tags:	FormBook xls

Office OLE Information

This malware samples appears to be an Office document. The following table provides more information about this document using oletools and oledump.

OLE id

Maldoc score: 4

OLE dump

MalwareBazaar was able to identify 18 sections in this file using oledump:

Section ID	Section size	Section name
1	114 bytes	CompObj
2	244 bytes	DocumentSummaryInformation
3	200 bytes	SummaryInformation
4	94 bytes	MBD001937E4/CompObj
5	62 bytes	MBD001937E4/Ole
6	123287 bytes	MBD001937E4/CONTENTS
7	99 bytes	MBD001937E5/CompObj
8	79145 bytes	MBD001937E5/Package
9	764 bytes	MBD001937E6/Ole
10	151184 bytes	Workbook
11	525 bytes	_VBA_PROJECT_CUR/PROJECT
12	104 bytes	_VBA_PROJECT_CUR/PROJECTwm
13	977 bytes	_VBA_PROJECT_CUR/VBA/Sheet1
14	977 bytes	_VBA_PROJECT_CUR/VBA/Sheet2
15	977 bytes	_VBA_PROJECT_CUR/VBA/Sheet3
16	985 bytes	_VBA_PROJECT_CUR/VBA/ThisWorkbook
17	2644 bytes	_VBA_PROJECT_CUR/VBA/_VBA_PROJECT
18	553 bytes	_VBA_PROJECT_CUR/VBA/dir

OLE vba

MalwareBazaar was able to extract and deobfuscate VBA script(s) the following information from OLE objects embedded in this file using olevba:

Type	Keyword	Description
Suspicious	Hex Strings	Hex-encoded strings were detected, may be used to obfuscate strings (option --decode to see all)

Intelligence

File Origin

# of uploads :

# of downloads :

328

Origin country :

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

abde8177-bb21-443b-2ab1-258b1a8ca19b.eml

Verdict:

Suspicious activity

Analysis date:

2024-01-12 08:03:54 UTC

Tags:

opendir

Link:

https://app.any.run/tasks/4c73a0cd-ae89-434f-8a76-66bdae353bac

Note:

ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample

Detection:

n/a

Link:

https://www.capesandbox.com/analysis/470506/

Detection(s):

SecuriteInfo.com.Heur.1282.16692.UNOFFICIAL

TwinWave.EvilDoc.OleWishDottedQuadPolicykill.20220908.UNOFFICIAL

Result

Verdict:

Malware

Maliciousness:

Behaviour

Searching for the window

Creating a window

Searching for synchronization primitives

Launching a process

Сreating synchronization primitives

Sending an HTTP GET request

Launching a process by exploiting the app vulnerability

Result

Verdict:

Malicious

File Type:

Legacy Excel File with Macro

Link:

https://app.docguard.net/05c081f975c82f8a51774b2a4a0472bb3a212abace29ce28b78b85c69eb915a6/results/dashboard

Payload URLs

URL

File name

http://172.245.208.28/exl/entiersystemneedsuchagoodupdationforsecuretheofficefilesformthepeopleswhocatchsystem.doc

Embedded Ole

Behaviour

SuspiciousRTF detected

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

macros

Link:

https://www.filescan.io/uploads/65a13672fd5068bbc3d14b0f/reports/aaefb290-9681-4423-8697-faf3994e410c/overview

Verdict:

Malicious

Labled as:

CVE-2017-0199

Link:

https://www.hybrid-analysis.com/sample/05c081f975c82f8a51774b2a4a0472bb3a212abace29ce28b78b85c69eb915a6

Label:

Benign

Suspicious Score:

4.6/10

Score Malicious:

46%

Score Benign:

54%

Link:

https://www.malware.ai/gui/files/?id=e2c862a7-1d27-499a-bb7d-63407a71e94a

Result

Verdict:

MALICIOUS

Link:

https://labs.inquest.net/dfi/sha256/05c081f975c82f8a51774b2a4a0472bb3a212abace29ce28b78b85c69eb915a6

Details

Document With Few Pages

Document contains between one and three pages of content. Most malicious documents are sparse in page count.

Result

Threat name:

FormBook

Detection:

malicious

Classification:

troj.expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1373695

Signature

.NET source code contains potential unpacker

Antivirus detection for dropped file

Antivirus detection for URL or domain

C2 URLs / IPs found in malware configuration

Document exploit detected (process start blacklist hit)

Excel sheet contains many unusual embedded objects

Found malware configuration

Injects a PE file into a foreign processes

Machine Learning detection for dropped file

Malicious sample detected (through community Yara rule)

Maps a DLL or memory area into another process

Microsoft Office drops suspicious files

Microsoft Office launches external ms-search protocol handler (WebDAV)

Modifies the context of a thread in another process (thread injection)

Modifies the prolog of user mode functions (user mode inline hooks)

Multi AV Scanner detection for dropped file

Multi AV Scanner detection for submitted file

Office equation editor drops PE file

Office equation editor establishes network connection

Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802)

Office viewer loads remote template

Performs DNS queries to domains with low reputation

Queues an APC in another process (thread injection)

Sample uses process hollowing technique

Shellcode detected

Sigma detected: EQNEDT32.EXE connecting to internet

Sigma detected: File Dropped By EQNEDT32EXE

Snort IDS alert for network traffic

System process connects to network (likely due to code injection or exploit)

Tries to detect virtualization through RDTSC time measurements

Yara detected FormBook

Behaviour

Behavior Graph:

Download SVG

Detection:

formbook

Link:

https://mwdb.cert.pl/sample/05c081f975c82f8a51774b2a4a0472bb3a212abace29ce28b78b85c69eb915a6/

Threat name:

Document-Word.Exploit.CVE-2017-0199

Status:

Malicious

First seen:

2024-01-11 13:02:51 UTC

File Type:

Document

Extracted files:

AV detection:

8 of 37 (21.62%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=axaid6lvzaxyuulxjmveubdsxm5cckv2zyu44kfxroc4nhvzcwta._file

Result

Malware family:

formbook

Score:

10/10

Tags:

family:formbook campaign:he09 rat spyware stealer trojan

Link:

https://tria.ge/reports/240112-p47j7shaa9/

Behaviour

Checks processor information in registry

Enumerates system info in registry

Launches Equation Editor

Modifies Internet Explorer settings

Modifies registry class

Suspicious behavior: AddClipboardFormatListener

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

Suspicious use of FindShellTrayWindow

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Uses Task Scheduler COM API

Uses Volume Shadow Copy WMI provider

Uses Volume Shadow Copy service COM API

Office loads VBA resources, possible macro or embedded object present

Suspicious use of SetThreadContext

Abuses OpenXML format to download file from external location

Executes dropped EXE

Loads dropped DLL

Blocklisted process makes network request

Downloads MZ/PE file

Formbook payload

Formbook

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/05c081f975c8/report/overview.html

Please note that we are no longer able to provide a coverage score for Virus Total.

Threat name:

Malicious File

Score:

1.00

Link:

https://yomi.yoroi.company/submissions/05c081f975c82f8a51774b2a4a0472bb3a212abace29ce28b78b85c69eb915a6

YARA Signatures

MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:	Borland Create hunting rule
Author:	malware-lu

Rule name:	Check_OutputDebugStringA_iat Create hunting rule

Rule name:	cobalt_strike_tmp01925d3f Create hunting rule
Author:	The DFIR Report
Description:	files - file ~tmp01925d3f.exe
Reference:	https://thedfirreport.com

Rule name:	DebuggerCheck__API Create hunting rule
Reference:	https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

Rule name:	DebuggerException__SetConsoleCtrl Create hunting rule
Reference:	https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

Rule name:	informational_win_ole_protected Create hunting rule
Author:	Jeff White (karttoon@gmail.com) @noottrak
Description:	Identify OLE Project protection within documents.

Rule name:	maldoc_getEIP_method_1 Create hunting rule
Author:	Didier Stevens (https://DidierStevens.com)

Rule name:	maldoc_OLE_file_magic_number Create hunting rule
Author:	Didier Stevens (https://DidierStevens.com)

Rule name:	malware_shellcode_hash Create hunting rule
Author:	JPCERT/CC Incident Response Group
Description:	detect shellcode api hash value

Rule name:	meth_get_eip Create hunting rule
Author:	Willi Ballenthin

Rule name:	office_document_vba Create hunting rule
Author:	Jean-Philippe Teissier / @Jipe_
Description:	Office document with embedded VBA
Reference:	https://github.com/jipegit/

Rule name:	PE_Digital_Certificate Create hunting rule
Author:	albertzsigovits

Rule name:	pe_no_import_table Create hunting rule
Description:	Detect pe file that no import table

Rule name:	SEH__vba Create hunting rule
Reference:	https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

Rule name:	vmdetect Create hunting rule
Author:	nex
Description:	Possibly employs anti-virtualization techniques

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

Formbook

xls 05c081f975c82f8a51774b2a4a0472bb3a212abace29ce28b78b85c69eb915a6

(this sample)

Delivery method

Distributed via e-mail attachment

Cape

https://www.capesandbox.com/analysis/470506/

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